Spaces:
Building
Building
File size: 2,418 Bytes
5cee033 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 |
// Copyright 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Adapter utility from fuzzer input to a temporary file, for fuzzing APIs that
// require a file instead of an input buffer.
#ifndef FUZZER_TEMP_FILE_H_
#define FUZZER_TEMP_FILE_H_
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
// Pure-C interface for creating and cleaning up temporary files.
static char *fuzzer_get_tmpfile(const uint8_t *data, size_t size)
{
char *filename_buffer = strdup("/tmp/generate_temporary_file.XXXXXX");
if (!filename_buffer) {
perror("Failed to allocate file name buffer.");
abort();
}
const int file_descriptor = mkstemp(filename_buffer);
if (file_descriptor < 0) {
perror("Failed to make temporary file.");
abort();
}
FILE *file = fdopen(file_descriptor, "wb");
if (!file) {
perror("Failed to open file descriptor.");
close(file_descriptor);
abort();
}
const size_t bytes_written = fwrite(data, sizeof(uint8_t), size, file);
if (bytes_written < size) {
close(file_descriptor);
fprintf(stderr, "Failed to write all bytes to file (%zu out of %zu)", bytes_written, size);
abort();
}
fclose(file);
return filename_buffer;
}
static void fuzzer_release_tmpfile(char *filename)
{
if (unlink(filename) != 0) {
perror("WARNING: Failed to delete temporary file.");
}
free(filename);
}
// C++ RAII object for creating temporary files.
#ifdef __cplusplus
class FuzzerTemporaryFile
{
public:
FuzzerTemporaryFile(const uint8_t *data, size_t size) : filename_(fuzzer_get_tmpfile(data, size)) { }
~FuzzerTemporaryFile() { fuzzer_release_tmpfile(filename_); }
const char *filename() const { return filename_; }
private:
char *filename_;
};
#endif
#endif // FUZZER_TEMP_FILE_H_
|